High-Side Current-Sense and Internal 1°C Temperature Monitor
Datasheet
Table 2.2 Electrical Specifications (continued)
VDD = VBUS = 3V TO 24V, VPULLUP = 3V TO 5.5V, TA = -40°C TO 85°C,
ALL TYPICAL VALUES AT VDD = VPULLUP = 3.3V, VBUS = 12V, AND TA = 27°C UNLESS OTHERWISE NOTED.
CHARACTERISTIC
SYMBOL
MIN
TYP
MAX
UNIT
CONDITIONS
Threshold Accuracy
(±)
VTH_ERR
2
5
%
VTH = 80mV
INTERNAL TEMPERATURE MONITOR
0.25
1
2
°C
°C
°C
-5°C < TA < 85°C
Temperature
Accuracy (±)
-40°C < TA < 85°C
Temperature
Resolution
0.125
CONVERSION TIMES
Time after power up before
temperature and voltage
measurements updated and
PRATIO updated
First Conversion
Ready
tCONV_T
180
300
25
ms
ms
Time before SMBus
communications should be sent
by host
SMBus Delay
tSMB_D
DIGITAL I/O PINS (SMCLK, SMDATA, THERM, ALERT)
SMCLK, SMDATA
OD pins pulled up to VPULLUP
Input High Voltage
Input Low Voltage
Output Low Voltage
VIH
VIL
2.0
V
V
V
0.8
0.4
OD pin pulled to VPULLUP
4 mA current sink
VOL
APPLICATION NOTE: The EMC1701 is trimmed at the 80mV range for best accuracy.
2.2
SMBus Electrical Specifications
Table 2.3 SMBus Electrical Specifications
VDD= VBUS = 3V to 24V, VPULLUP = 3V to 5.5V, TA = -40°C to 85°C Typical values are at TA = 27°C unless
otherwise noted.
CHARACTERISTIC
SYMBOL
MIN
SMBUS INTERFACE
10
TYP
MAX
UNITS
CONDITIONS
Input Capacitance
CIN
4
pF
SMBUS TIMING
Clock Frequency
fSMB
tSP
10
400
50
kHz
ns
Spike Suppression
SMSC EMC1701
Revision 1.2 (09-27-10)
DATA1S3HEET
SMSC [ SMSC CORPORATION ]
